Results 11 to 20 of about 5,798 (299)
Action recognition method for mine kilometer directional drilling rig
Gong-kuang zidonghua, 2022 At present, the walking and drilling operations of the mine kilometer directional drilling rig are all realized by the manual operation of drillers. The intelligence level is low.
XIANG Xueyi +5 more
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Drag Reduction Technology of Ultra-long Directional Drilling and Its Application
Meikuang Anquan, 2020 In view of the problems such as high resistance, low efficiency and limited drilling depth during the sliding directional drilling under the condition of deep hole, this paper studies and forms the drag reduction technology of sliding drilling, including
WANG Xian, JIANG Lei, LI Quanxin, XU Chao
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Gong-kuang zidonghua, 2018 For problems of shallow gas drainage hole depth, low control precision of drilling trajectory and poor gas drainage effect in soft—fragmentized coal seam of Qinglong Coal Mine, based on the analysis of mine gas geological conditions and existing pre ...
LI Quanxin +3 more
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Development of ZDY15000LD High Power Directional Drilling Rig
Meikuang Anquan, 2020 To meet the needs of gas extraction, water damage prevention and detection of hidden disaster factors in the long working face of coal mine area with long distance and high efficiency, the high-power directional drilling equipment ZDY15000LD with 1 500 ...
ZHANG Rui
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Research and application of near-horizontal directional coring technology and supporting drilling tools [PDF]
Meikuang AnquanIn order to solve the technical problems of accurate and fine geological exploration of mines and preliminary exploration of infrastructure projects, based on the deflection mechanism of rope coring straightening drilling trajectory, a combination of ...
Zujie ZOU
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Quasi-bilinear modelling and control of directional drilling [PDF]
, 2020 A quasi-bilinear proportional-plus-integral (QBPI) controller is proposed for the attitude control of directional drilling tools for the oil and gas industry; and it is designed based on the proposed quasi-bilinear model of the directional drilling tool.
Whidborne, James F., Inyang, Isonguyo J.
core +1 more source
alin256/Directional-Boring: Updated interface that includes sharing replays
, 2022 Horizontal Directional Drilling ...
Daniel Shiffman +4 more
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Meikuang Anquan, 2020 Aiming at the problems such as low efficiency and depth limit of directional drilling caused by the support pressure of drilling tools in the directional drilling of ultra-deep hole in underground coal mine, learning from the twist drilling technology ...
JIANG Lei, XU Chao, LI Quanxin, WANG Xian
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Hole completion technology for high level directional long borehole in complex roof
Meikuang Anquan, 2023 Aiming at the problems existing in the construction of high directional drilling in Tingnan Coal Mine roof, such as stratum breakage in open hole section, mudstone shrinkage in directional hole section, low efficiency of two-stage reaming and easy ...
Changbao JING +4 more
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Petroleum Exploration and Development, 2013 In order to address the contradiction between drilling safety and coalbed damage control, a degradable drilling-in fluid (DIF) was developed for complex structure wells in coalbed methane (CBM) reservoirs.
Dawei LIU +5 more
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